G01F 1/34
By measuring pressure or differential pressure
Official title: by measuring pressure or differential pressure
G01F1/34 (By measuring pressure or differential pressure) appears on 2,498 US grants and 2,071 published applications in this corpus.
Search patents in G01F- Granted patents
- 2,498
- Published applications
- 2,071
- Assignees
- 1,251
- Inventors
- 4,540
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 22 | 0 |
| 1978 | 20 | 0 |
| 1979 | 18 | 0 |
| 1980 | 24 | 0 |
| 1981 | 23 | 0 |
| 1982 | 19 | 0 |
| 1983 | 26 | 0 |
| 1984 | 21 | 0 |
| 1985 | 24 | 0 |
| 1986 | 13 | 0 |
| 1987 | 19 | 0 |
| 1988 | 22 | 0 |
| 1989 | 33 | 0 |
| 1990 | 25 | 0 |
| 1991 | 38 | 0 |
| 1992 | 30 | 0 |
| 1993 | 31 | 0 |
| 1994 | 32 | 0 |
| 1995 | 42 | 0 |
| 1996 | 45 | 0 |
| 1997 | 36 | 0 |
| 1998 | 53 | 0 |
| 1999 | 35 | 0 |
| 2000 | 42 | 0 |
| 2001 | 49 | 10 |
| 2002 | 42 | 29 |
| 2003 | 55 | 43 |
| 2004 | 34 | 48 |
| 2005 | 49 | 47 |
| 2006 | 32 | 52 |
| 2007 | 49 | 48 |
| 2008 | 39 | 57 |
| 2009 | 43 | 79 |
| 2010 | 50 | 63 |
| 2011 | 55 | 74 |
| 2012 | 43 | 60 |
| 2013 | 68 | 78 |
| 2014 | 52 | 79 |
| 2015 | 66 | 101 |
| 2016 | 102 | 121 |
| 2017 | 83 | 114 |
| 2018 | 120 | 134 |
| 2019 | 96 | 129 |
| 2020 | 120 | 117 |
| 2021 | 102 | 123 |
| 2022 | 95 | 126 |
| 2023 | 104 | 103 |
| 2024 | 109 | 88 |
| 2025 | 85 | 102 |
| 2026 | 44 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flow switch with variable orifice6 Oct 2026US 12,754,048 B2Barksdale, Inc.
- Apparatus with optical feature changing visual state6 Oct 2026US 12,754,049 B2Medici Therapeuticals, Inc.
- Measurement of flow rate, density, viscosity, and rheology of multiphase fluids in a pipe6 Oct 2026US 12,754,115 B2Saudi Arabian Oil Company
- Flow rate calculation device and flow rate calculation method22 Sep 2026US 12,742,667 B2HORIBA STEC, Co., Ltd.
- Metering systems and methods22 Sep 2026US 12,742,671 B2Sur-Flo Meters & Controls Ltd.
- System and method for carbon emission reduction1 Oct 2026US 2026/0298683 A1Ge Digital Holdings LLC
- Systems and methods for detecting deposit accumulation within a multiphase flow meter1 Oct 2026US 2026/0298684 A1Schlumberger Technology Corporation
- Measurement apparatus10 Sep 2026US 2026/0266638 A1Yokogawa Electric Corporation
- Micro-electro-mechanical systems on fiber sensors for fluid characterization, flow, and density measurement10 Sep 2026US 2026/0266639 A1Saudi Arabian Oil Company
- Differential pressure assembly with protective boot and arrangement for amplifying pointer3 Sep 2026US 2026/0259095 A1Watts Regulator Co.
Most cited
By later US patents
- System and method for telemetrically providing intrabody spatial position621US 6,239,724 B1Remon Medical Technologies, Ltd. · 2001
- Delivery of aerosol medications for inspiration598US 5,404,871 AAradigm Corporation · 1995
- Method for wide range gas flow system with real time flow measurement and correction590US 6,119,710 ACyber Instrument Technologies LLC · 2000
- Valve system with removable fluid interface540US 5,088,515 A1992
- Gas flow rate verification unit475US 7,716,993 B2Ckd Corporation · 2010